Sectional shell.



PATBNTED MAY 24, 1904,

e. H. POOR. SEGTIONAL SHELL. APPLICATION FILED FEB. 20, 1904.

2 SHEETS-SHEET 1.

N0 MODEL.

GeOr cHIZ OOr I II II uonms ravens co, pnornvumou wAsnmn'rbN, o n.

I PATBNTED MAY 24,

' Nb. 760,754" v U G.'H 3003. v

SBGTIONAL SHELL. APPLICATION FILED FEB. 20, 1904.

2 SHEETS-8HEET 2.

no MODEL.

Patented May 24, 1904.

TEN OFFICE.

. GEORGE Moon, 0F CHICAGO,

inhiriois. lissienoii .TosiMUEL 1 WORIHINGTON- MoMUNN, or CHICAGO,- ILLINOIS.

sEoTIoNALi'sHEL r i.

- SPECIFICATION: orming' part of Letters; Patent No. 760,754, dated May 2*, 1904.

Application filed February 20,1904} Serial flu, 194,534. (No mtaa.)

' To, all it May-concern: i v I elit known that I, GEoRen' H. POOR, a citizen of the United States, and'a' resident of Chicago, in the county of Cook and State' of Illinois, haveinvented certain new and useful Improvements in, Sectional Shells; and I do hereby declare'that the following is a full, clear, and exactdescriptionthereof, reference being had to the accompanying drawings, and to the lettersofreference marked thereon, which form apart of this specification. l This invention relates to. shells adapted to be applied to'pile work being driven into the ground .or through water, sand, or other soft material and subsequently being filled with a concrete material, the shell, being ordinarily driven into position by means of a collapsible core. Heretofore such shells have been made of such length. as were needed for :the given pilethat is to say,. if it was desired tomake a pile thirty feet long the. shell would be one continuous structurethirty feet in length."

. The first and primary object ofmyinvention isto make a sectional shell+that is to say, a shell for any given length of pile-which shall be: imparts or sections. v

Anotherobject of my invention is to make such shell -.sections telescopic,- primarily. for

moreconvenience inpacking and shipping j Yet another objectwof. my invention is to so construct the difierent sectionsofthe shell that whenplaced in, juxtaposition to form a complete shell the adjacent section endsshall.

abut each other, the abutting adjacent ends of the shell-sections being suitably bound togetherby means of a collar.

such sectional shells waterproof by treating them to a suitable waterproofing material or by'securing' the joints togetherby means of waterproof cement or the like.

Another object of my invention is to cheapen the cost of manufacture of paper shells for invention. Fig. 2'is a vertical sectional view,

enlarged, of two abutting sections of the shell and taken through the surrounding-collar upon line 2 2 of Fig; 1. Fig. 3 is a transverse or horizontal sectionalview, also enlarged,.taken upon the line 3 3 of Fig. 2. Fig. 4 isa perspective view' of sections of a shell, showing a modified form. Fig. .5 is a verticalsectional also the surrounding collar. Fig. is a per- .spective vie'w'of one of the collars- Fig. 7 is a horizontal plan view, enlarged, showing the 8 is a diagrammaticview, further enlarged,

the-shell illustrated in Fig.7.

In making, the sectional. shell I may use metal, paper, cardboard, or other sheet mate rial. .Wherever the material used is of suf: ficient rigidity for the purpose, I :prefer to out, the section-blankfto proper shape,- turn the sheetof material into a tapered .tubular form over amandrel; lap the adjacent side margins, and rivet the-lapped margins by suitable .means, .using, preferably, a waterproof cement. between the lapped portions before is. made entirely. of paper, I prefer tomake theseparate sheets of such shape that when rolled over amandrel the shell when completed will have the tapered form, as shown in Fig. 4, suitably securing the several sheets together by a waterproof cement andhaving the ends overlap. This latter form of shell- I Referring first to; the shell shown in Figs.

i A another shell-section. A portion of a third shell-section is shown at A and the collar securing the adjoining sections together is shown at B. V The shell-sections are each made of a single piece of cardboard, sheet metal, or the cent side margins at a overlap each oth'er, as shown in Figs. 1 and These overlapping ends or sides are suitably secured together by means of a plurality of rivets a m The collar B is made in a similar fashion, but of such showing, the lapoints of the sheets formingriveting, as shown inFig. 1. Where the shell,

section constitutes the modificationillustratedv in Figs. 4 to 8, inclusive. Another object of my invention is to make like wrapped over. a mandrel so that its'adja- View, enlarged, of such modification, showing I method of forming one of the sections. Fig.

1, 2, and 3, A represents one shell-section, and

between the adjacent end sections and the said collar, as indicated in Fig. 3.

Rivets b are preferably used to secure the overlapping endsof the collar B, as shown. This form of .shell makes an exceedingly simple, durable,

cheap, and convenient shell-section.

- Referring now more particularly to Figs. t

to 8, inclusive, the letters D D designate shellsections. In Fig. 4c Ihave shown two sectionsv and the lower end of a third section of paper shell embracing the modified form be- -fore referred to. 5'.

. mented .together.

Each section is composed of a plurality of sheets of paper 0? d d (Z wrapped abouta mandrel and suitably ce- In this drawing I have shown simply for convenience each section (and alsothe binding-ring) as being composed of but four of such sheets of paper; but obviously any number of sheets of paper may go about a suitable mandrel.

be used for the purpose. D is the collar. Referring more particularly to Figs. 7 and 8, .it will be noticed that the first or innermost sheet (lettered d) is of such size as to just The adjacent side margins of the sheet do not overlap each other and would abut each other but for the next adjacent sheet d being interposed between the said two side margins or edges that is tosay, the next sheet d is positioned upon the mandrel at such a point that its inner side margin 0 is interposed between the two adjacent edges or margins of the sheet 0?, and the sheet d is then wrapped about the exterior of the sheet cl. Beforethe outer or free side margin is secured in positionthe third sheet 03* is positioned, its inner side margin f being similarly placed between the two adjacent edges of the sheet 0?. Similarly the inner margin 9 of the sheet d is interposed between the two margins of the sheet (1 and the sheet is then wrapped about the mandrel, and so on, the point where the next sheet is laid on shifting radially each time until the section is completed. In other words, each sheet is laid upon the preceding sheet after the first sheet has been wrapped about the mandrel in such shape as to have its edge overlap the last edge of the preceding sheet.

In this way sheet after sheet is applied, the

overlapping edges being thus constantly shifted radially, as shown, a suitable waterproofing or cementing material (indicated in the drawings bythe black lines at h) being interposed between the several sheets. In this way the sheet-section is built up. This method of forming a sheet-section I make no specific claim for in this application, reserving the right to claim the same in another and separate application. The built-up sections are constructed by means of suitable machinery designed for that purpose, which is also the subject of a separate application and for which I make no claim in this application.

In practice the several shell-sections will probably not be over ten or twelve feet in length, and the collar surrounding the adjacent or abutting ends of such shell-sections will be approximately twelve inches in length; but the length of the sections and shells may vary to suit the needs of any particular piece of work.

What I claim, and desire to secure ters Patent, is as follows:

1. A shell for pilework consisting of a plurality of tapered sections placed end to end, their abutting ends covered by a suitable collar or band.

2. A shell for concrete pilcwork consisting of a plurality of tapered sections placed end to end, their abutting ends covered bya suitable collar or band of the same material.

3. A shell for concrete piles consisting of a plurality of tapered sections, each section being composed of a single piece of material lapjointed and riveted,

4. A shell for concrete piles consisting of a plurality of tapered sections,'each section being composed of a single piece of material lapjointed and riveted, the ends of the several sections abutting each other and suitably secured together by a collar or band.

In testimony that I claim the foregoing as my invention I aflix my signature, in presence of two witnesses, this 17th day of February, A. D. 1904.

' GEORGE H. POOR.

by Let- Witnesses:

TAYLOR E. BROWN, O; CLARENCE PooLE. 

